Column Product Layout

[integrity_designs]

Thanks for the links.
I done a search with the Developer Tool Kit and have got the following:

includes/modules/custom/product_listing.php

Line #102 : $col_width = floor(100/$num_products_count) - 0.5;

Line #104 : $col_width = floor(100/PRODUCT_LISTING_COLUMNS_PER_ROW) - 0.5;

Line #117 : if ((($rows-$extra_row)/2) == floor(($rows-$extra_row)/2)) {

includes/modules/product_listing.php

Line #79 : if ((($rows-$extra_row)/2) == floor(($rows-$extra_row)/2)) {

I am at a loss.....